5 citations · 10 across the 16 of their papers we have counts for
4 papers · 1 filter
The Authorization Policy Existence Problem
Pierre Bergé, Jason Crampton, Gregory Gutin +1
Constraints such as separation-of-duty are widely used to specify requirements that supplement basic authorization policies. However, the existence of constraints (and authorizatio…
Cryptographic Enforcement of Information Flow Policies without Public Information via Tree Partitions
Jason Crampton, Naomi Farley, Gregory Gutin +2
We may enforce an information flow policy by encrypting a protected resource and ensuring that only users authorized by the policy are able to decrypt the resource. In most schemes…
Cryptographic Enforcement of Information Flow Policies without Public Information
Jason Crampton, Naomi Farley, Gregory Gutin +2
Cryptographic access control has been studied for over 30 years and is now a mature research topic. When symmetric cryptographic primitives are used, each protected resource is enc…
On the Parameterized Complexity and Kernelization of the Workflow Satisfiability Problem
Jason Crampton, Gregory Gutin, Anders Yeo
A workflow specification defines a set of steps and the order in which those steps must be executed. Security requirements may impose constraints on which groups of users are permi…